UPGRADING OF LIGNITE WITH WATER AND WITH WATER-TETRALIN-MIXTURES IN SUBCRITICAL AND SUPERCRITICAL STATES
CHEMISCHE TECHNIK, vol.43, no.8, pp.295-303, 1991 (SCI-Expanded)
- Publication Type: Article / Article
- Volume: 43 Issue: 8
- Publication Date: 1991
- Journal Name: CHEMISCHE TECHNIK
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), MLA - Modern Language Association Database
- Page Numbers: pp.295-303
- Ankara University Affiliated: No
Abstract
Lignite was extraced with water and with water-tetralin-mixtures in sub- and supercritical states. With the help of the technique used, it was possible to study the mechanism of decomposition of the lignite during the extraction. A simple reaction-kinetic model was used to obtain the activation energy and the frequency factor for the extraction with water, respectively water-tetralin-mixtures. A process for upgrading of lignite with water, respectively water-tetralin-mixtures was proposed.